Some MEDICINES MAY INTERACT with Tadalafil
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Tell your health care provider if you are taking any other medicines, especially any of the following:
Azole antifungals (eg, ketoconazole), HIV protease inhibitors (eg, indinavir), ketolides (eg, telithromycin), or macrolides (eg, erythromycin) because actions and side effects, such as prolonged erection, dizziness upon standing, or vision problems, may be increased
Nitrates (eg, nitroglycerin, isosorbide) because blood pressure could drop suddenly to unsafe levels, causing dizziness, fainting, heart attack, or stroke
Alpha-blockers (eg, doxazosin) because dizziness, especially upon standing, or fainting may occur
This may not be a complete list of all interactions that may occur. Ask your health care provider if Tadalafil may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.